Purpose of flat response below 20Hz - Why does it matter? - Page 19

Originally Posted by Archaea 

you are now and forever uninvited from any subwoofer g2gs

Originally Posted by ack_bk 

Sigh... You left out the part where I said I did this all afternoon... And the part where nobody in my family has ever felt sick after watching a movie. What movie has 3+ hours straight of heavy mid to low frequency bass? None. Again, you can't cherry pick the data for your agenda.
Too much of anything is bad for you. ULF bass, in moderation, is not harmful, and there are no side effects.

Originally Posted by JHAz 

like many with a deeply rooted bias, he sees anecdotes that support his beliefs as proof, and anecdotes that do not support his beliefs as BS. And he can't tell he's doing it, so he cannot be convinced not to do it.
On a somewhat similar note, I had the dubious pleasure of jamming with some players at a usually-highly professional open jam last week, and unfortunately these particular folks were unable to discern that they were incapable of playing. No sense yelling at them that their chord progressions varied randomly or that their tuning changed from measure to measure. You muddle through, and get the heck away from them . . . .

Originally Posted by Auditor55 

I'm not coming with any belief, what I have cited to you is from folks with extensive knowledge about this stuff. You guys are just in here trying to defend an expenditure. You reject the scientific information that's right before you.

Originally Posted by mojomike 

We're still waiting to see the science from you.

Originally Posted by Auditor55 

Really, I thought some of you wanted me banned!!

Originally Posted by mojomike 


Perhaps some of us would like you banned, but you've never heard me call for that. I actually find your unique warped, loopy sense of logic oddly amusing.

Originally Posted by sputter1 

He's cheap entertainment much like that guy who spend hundreds of dollars on cables and waxes them just to run discount speakers on his laptop.

Originally Posted by Auditor55 

I'm not coming with any belief, what I have cited to you is from folks with extensive knowledge about this stuff. You guys are just in here trying to defend an expenditure. You reject the scientific information that's right before you.

Originally Posted by MKtheater 

Well, even your so called science proves that HT infrasounds are not harmful. The spl's and duration are not even loud and long enough to cause annoyance and or distraction, which BTW, is not harmful even if it did.The purpose of this thread is for HT, nothing else.

Originally Posted by J_Palmer_Cass 

If that is true, then why do posters complain about the wife yelling at them to turn the system down when the wife is not even in the AV room?

Originally Posted by jhan1000 


Anecdotes do not equal science....

Originally Posted by MKtheater 


If you have a wife that complains the theater is not the cause!

Originally Posted by MKtheater 

If you have a wife that complains the theater is not the cause!

Originally Posted by sb1 

My wife always sits on a sub during demo scenes. I wonder if that's why she supports my upgrades with a smile.

Originally Posted by sputter1 

TMI.

Originally Posted by MKtheater 

Well, even your so called science proves that HT infrasounds are not harmful. The spl's and duration are not even loud and long enough to cause annoyance and or distraction, which BTW, is not harmful even if it did.The purpose of this thread is for HT, nothing else.

Originally Posted by JHAz 

What do you mean? If I only need 150 dB, why that's only a litlle over 400 times the power to achieve reference, plus enough drivers with enough excursion to use that much power. Doesn't everybody have that?

Originally Posted by Carl_Huff 

My business partner and I back in the 70's used to take pride in the fact that our subwoofers could make drunks puke on the dance floor when they were stupid enough to linger in front in them. Does that count? Ha, ha ...
_____________
Best Regards,
Carl Huff

Originally Posted by nube 

Originally Posted by nube 

Originally Posted by nube 

Originally Posted by nube 

Originally Posted by Archaea 

We did two tests tonight at the Gorilla83 meet. Mixed results on one test and definitive results on the other.
We had three Submersive HPS. One F2 HP, two traditional dual opposed Submersive HPs.

Here was the uneq'ed frequency response in Gorilla83's room as we listened to the three submersives. FR captured 10x's and averaged at MLP.

For the Tracks we used the most recent Incredible Hulk cop car smash scene and a snippet of the Bass I love you clip. We played both clips back to back with a minidsp engaging a HPF at 18hz, and then with the HPF removed. Then we blind tested the two tracks again and had people vote on which A / B replay had deeper bass.
On the incredible Hulk Scene 12 out of 14 people voted correctly in blind voting done by show of hands with eyes closed.
On the Bassotronics - Bass I Love You track (which contained 15 and 7hz content) - nobody could tell and we didn't even blind vote because nobody knew and everyone admitted so before the voting.
I hold a ported sub preference -- generally, and I could tell pretty clearly (and was right) from my seating position which A/B had deeper content on the Hulk footsteps and cop car smash scene because my pant legs shook a bit more and my body seemed to feel a bit more tactile feedback. I voted correctly.
However, On the Bass I Love You Track I couldn't have determined the difference if my life depended on it from that A/B demo.
Interesting to be sure. 12 of 14 indicates that at least on at least some demo clips people can definately tell the difference. We will do additional testing at the Omaha Home Theater tour happening next weekend in at least two theaters --- HuskerOmaha's with four UXL18 drivers, and Desertdome with eight 15" drivers in an infinite baffle setup.